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Solnce55 [7]
2 years ago
5

Solve the equation by factoring.

Mathematics
2 answers:
Delicious77 [7]2 years ago
6 0

Factorizing an expression involves writing the expression in simpler forms

The values of z are z = \frac 15 or z=4

The equation is given as:

5z^2 - 21z + 4 = 0

Expand the equation

5z^2 - 20z -z + 4 = 0

Factorize the expression:

5z(z - 4) -1(z - 4) = 0

Factor out z - 4

(5z - 1)(z - 4) = 0

Split

5z -1 = 0 or z - 4 = 0

Solve for z

z = \frac 15 or z=4

Hence, the values of z are z = \frac 15 or z=4

Read more about factorization at:

brainly.com/question/11579257

makvit [3.9K]2 years ago
6 0

I would say the answer would be D by my calculations if I'm wrong I will come back and update

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